School of Geography and Environmental Sciences, Ulster University, Coleraine, UK.
Agri-Food and Biosciences Institute, Newforge Lane, Belfast, UK.
Water Res. 2022 Aug 15;222:118858. doi: 10.1016/j.watres.2022.118858. Epub 2022 Jul 12.
The framework, model and methods of Nürnberg were applied and evaluated in Lough Neagh and 19 other lakes in order to establish inflow phosphorus concentrations that support target lake values. Supporting concentrations, in the absence of an internal load, were derived and the effect of uncertainty in the model retention coefficient was relatively small, ±11-20 % in Lough Neagh and an average (n = 17) of ±9.7 % in the other lakes. There was further support for the model and methods from an independent estimate of the net internal load in Lough Neagh (13 % difference) and from another model in the other lakes (Supporting concentrations, which should be lower, were by an average of 11 mg P m). In the framework, steady state with the phosphorus load is assumed, but, based on a generic lake model, is not likely if the hydraulic residence time>0.5-0.8 yr and should lead to a decrease in phosphorus retention, which was found during three periods in Lough Neagh. Based on a compilation of internal load recovery times from 23 lakes in the literature, it could take between 8 and 20 years for lakes with an internal load to approach their targets.
Nürnberg 框架、模型和方法被应用于和评估了拉夫尼格湖以及其他 19 个湖泊，目的是确定支持目标湖泊值的入湖磷浓度。在没有内部负荷的情况下，得出了支持浓度，模型滞留系数的不确定性的影响相对较小，在拉夫尼格湖为±11-20%，在其他湖泊的平均值为±9.7%。拉夫尼格湖的净内部负荷的独立估计（相差 13%）和其他湖泊中的另一个模型进一步支持了该模型和方法（支持浓度应该更低，平均低 11 毫克 P m）。在该框架中，假设磷负荷处于稳定状态，但基于通用湖泊模型，如果水力停留时间>0.5-0.8 年，这种情况不太可能发生，并且应该导致磷的滞留减少，在拉夫尼格湖的三个时期都发现了这种情况。基于文献中 23 个湖泊的内部负荷恢复时间的汇编，具有内部负荷的湖泊可能需要 8 到 20 年才能接近其目标。
